“ As of June 27, 2014, these recurring article titles are not categorized:
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Correspondence
Correspondence and Editor's Table
Discussion and Correspondence
Editor's Table
Entertaining Varieties
Fragments of Science
General Notices
Literary Notices ”

“ Ethology
Eugenics articles in Popular Science Monthly
Evolution
Evolution articles in Popular Science Monthly
Evolution by taxon articles in Popular Science Monthly
Evolution of specific adaptations or structures
Evolutionary biology
Evolutionary developmental biology
Evolutionary history of life
Exploration articles in Popular Science Monthly
Extinction
Fabaceae
Fables in Popular Science Monthly
Fashion articles in Popular Science Monthly
Ferns
Fibres and fabrics
Fiji
Film
Finance articles in Popular Science Monthly
Fish evolution
Fishes ”